Prevalence of asthma and allergy in schoolchildren in Belmont, Australia: three cross sectional surveys over 20 years.
D001249:Asthma / Q000453:epidemiology; D002648:Child; D003430:Cross-Sectional Studies; D006801:Humans; D006967:Hypersensitivity / Q000453:epidemiology*; D009517:New South Wales / Q000453:epidemiology; D015995:Prevalence